#user-center{
  /* width: 1350px; */
  min-height: 760px;
  background-color: #ffffff;
  border-radius: 10px;
  margin: 0 auto;
  margin-top: 30px;
  padding: 15px;
}
#left-nav{
  margin-top: 30px;
  width: 230px;
  min-height: 550px;
  background-color: rgba(242, 242, 242, 1);
  border-radius: 10px;
  color: #cccccc;
  padding: 50px 25px;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  -o-border-radius: 10px;
}
#left-nav > ul > li{
  font-size: 18px;
  margin-top: 30px;
  margin-left: 25px;
}
#user-center-con{
  width: 1010px;
  margin-left: 50px;
}
#user-info{
  margin-top: 120px;
}
#user-info > .form-item{
  display: flex;
  flex-direction: row;
  justify-content: start;
  margin-top: 40px;
  font-size: 20px;
}
#user-info > .form-item > span{
  color: #515151; 
  font-size: 20px;
  font-weight: 400;
  line-height: 40px;
}
.form-value{
  margin-left: 25px;
}
.form-value > input{
  width: 260px;
  height: 40px;
  border: 1px solid #cccccc;
  border-radius: 5px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
  padding-left: 10px;
}

.form-value > img{
  border-radius: 35px;
  -webkit-border-radius: 35px;
  -moz-border-radius: 35px;
  -ms-border-radius: 35px;
  -o-border-radius: 35px;
}

.common-border{
  border: 1px solid #eeeeee;
  border-radius: 5px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
}
.user-course{
  padding: 30px;
  margin-top: 20px;
}
.user-course-info{
  width: 630px;
}
.user-course-info > p{
  margin-top: 10px;
}